28325777805 has 48 divisors (see below), whose sum is σ = 52902944640. Its totient is φ = 13937572224.

The previous prime is 28325777783. The next prime is 28325777827. The reversal of 28325777805 is 50877752382.

It is an interprime number because it is at equal distance from previous prime (28325777783) and next prime (28325777827).

It is not a de Polignac number, because 28325777805 - 2⁷ = 28325777677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1180942 + ... + 1204688.

It is an arithmetic number, because the mean of its divisors is an integer number (1102144680).

Almost surely, 2^28325777805 is an apocalyptic number.

It is an amenable number.

28325777805 is a deficient number, since it is larger than the sum of its proper divisors (24577166835).

28325777805 is a wasteful number, since it uses less digits than its factorization.

28325777805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25810 (or 25807 counting only the distinct ones).

The product of its (nonzero) digits is 6585600, while the sum is 54.

The spelling of 28325777805 in words is "twenty-eight billion, three hundred twenty-five million, seven hundred seventy-seven thousand, eight hundred five".